Lubricant compressor



June 1 1926. 1,587,292

D. F. FESLER LUBRICANT COMPRESSOR Filed Feb. 21, 1924 Jae/e17! orflazylasf'yesler Patented June 1, 1926.

UNITED STATES PATENT orrlcs.

DOUGLAS 1?. FESLER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE IBASSICKMANUFAC- TUBING COMPANY, OF CHICAGO, ILLINOIS, I- CORPORATION OFDELAWARE..

LUBRICANT COMPRESSOR.

Application filed February 21, 1924. Serial No. 694,302.

My invention relates toimprovements in lubricant compressors andisparticularly concerned with the provision of a novel cornpressoradapted to forni a part of a lubri- 5 eating system comprising aplurality of fittings which are secured to the hearings to be lubricatedand a compressor for successively making sealed contact with suchfittings so as to supply lubricant under pressure thereto.

The objects of my invention are:

First: to provide a compressor of the character described in which thepressure on the lubricant is developed by exerting a pressure againstthe fitting to be lubricated.

Second: to provide a compressor of the character described comprising abarrel and high pressure cylinder and plunger for operating in said highpressure cylinder a means for making sealed connection with the fitting,the elements being so arranged that when pressure is exerted upon thecompressor in the direction of the fitting, a

lubricant will be forced there i'nto under pressure.

Third: to provide a compressor such as described which is particularladapted to be used in connection with fittings com risinga cross pin orprojection extending from the sides of the fitting for co-acting withmeans on the compressor to lock the compressor to the'fitting.

Fourth: to provide a compressor of the character described, in which afloating piston is used for assuring a supply oflubricant to thecylinder; and I Fifth: to provide a compressor such as described whichis simple of construction, economical to manufacture "and easy tooperate.

Other objects of as this description progresses, reference being had tothe accompanying drawings, in which Figure 1 is a side elevationpartially in central longitudinal section disclosing the details ofconstruction of my improved compressor, one of the fittings with whichsaid compressor is adapted to co-operate being shown in side elevationin connection therewith; and- Figure 2 is a transverse section taken online 22 of Figure 1. V

Referring to the drawings, my improved my invention will appear Adjacentits inner en compressor comprises a barrel 5, having a removable cap 6,at one end and the internally threaded nipple 7 at the opposite end. Apair of cupshaped bushings 9 have their open ends threaded into thenipple 7. The bottoms of these bushings are provided with apertures 10and 10' respectively. The latter opening is hexagonal in shape as shownin Figure 2.

A plunger 11 has its outer end secured to the cap 6 as shown at 12andits inner end projects through the opening 10 in the bottom of thebushing 8, and into the inner end of the cylinder 13. A piston is slid--ably mounted in the barrel 5. This piston comprises the face plate 14:,the. follower plate 15 and a felt disk 16 which is confined between thetwo plates 14 and 15 to hold the plates and the disk in assembled rela-'tion. Tongues 17 maybe struck from the plate 14, bent at angles theretoand passed through suitable openings in' the follower plate-'15. Theouter ends of these tongues could be bent over or riveted at 17' so asto hold the felt disk 16 under slight pressure. vided with registeringopenings for receiving the plunger 11 so thatthe piston P is free toreciprocate in the barrel 5. The

plunger 11 may be provided with a cross pin 18 which can be withdrawnthrough the opening 10 and which acts as a stop so that when the 'cap 6and the piston 11. are with-, drawn from the barrel 5 for the purpose offilling the latter, the piston P will likewise be withdrawn from thebarrel.

The cylinder 13 is hexagonal in cross section as shown in Figure 2 andslides freely in the opening 10' but is of such size that it cannotrotate relativeiiy to the bushing 9.

the cylinder 13 is provided with laterally extending open- The disk andthe two plates are pro-' ings 19 which provide communication between thecylinder and the interior of the bushings 8, and The 'openin which is inthe bushing 8 in turn' establlshes communication between the bushingsand the barrel 5 so that when the-elements are in the relative positionsshown in Figure 1, lubricant may flow into the cylinder-13, A

collar 20 is threaded on to the cylinder 13-- intermediate the ends ofthe latter to'provide a stop for co-acting withthe bottom of the bushing9 and thus limit the outxaard inder 13 and the bushing, I

movement of the cylinder 13. For preventing the escape of lubricantbetween the cylprefer to provide the felt gasket 21 which is confinedbetween the collar 20 and the washer 22. This washer is constantly heldin contact with thegasket 21 by means of the compression spring 23, oneend of which abuts against the washer 22 and the opposite end of whichabuts against the bottom of the bushing 8.

For making a sealed contact with a fitting such as that shown at 24,which is provided with a pin, the opposite ends of which project fromthe sides of the fitting as shown at 25, I secure to the outer end ofthe cylinder 13 a suitable coupling sleeve 26 having inclined bayonetslots at the outer end for receiving the ends 25 of the pin of thefitting. For sealing the connection between the coupling sleeve 26 andthe fitting 25, I prefer to make use of a cup-leather 28 which is heldin its outermost position by means of a compression spring 29. Thedetails of construction of this sealing means are well known to thoseskilled in this art and further description thereof is for that reasonunnecessary.

\Vhen it is desired to lubricate a hearing which is provided with one ofthe fittings 24, the compressor is positioned relatively to this fittingas shown in Figure 1 and then moved downwardly so that the couplingsleeve 26 will receive the outer end of the fitting 24. The operatorthen turns the barrel 5 and this movement is communicated to thecoupling sleeve 26 by reason of the complementary shapes of the opening9 and the exterior of the cylinder 13. In this manner the bayonet slots27 are caused to receive the ends-25 of the pin, forming a part of thefitting, and to draw the cou ling sleeve 26 down over the fitting.During this action, the end of the fitting contacts with the gasket 28and moves it inwardly against the tension of the spring 29. In thismanner, inltial seals are established between the compressor and. thefitting. Thereupon the op erator presses down the cap 6 toward thefitting 24, thereby moving the barrel of the compressor and the attachedportions toward the fitting. This causes the plunger 11 to move into thecylinder 13 and displace the contents from the cylinder past the checkvalve 30 in the fitting and into the bearing. When the pressure on thecap 6 is released, the spring 23 returns the parts to the position shownin Figure 1 and as the plunger 11 is withdrawn from the cyllnder 13 avacuum is produced therein which, when the openings 19 are uncovered, iscommunicated to the contents of the barrel 5 and thereby draws lubricantinto the cylinder 13 so that upon the next movement of the barreltowards the, fitting this new chargeof lubricant will be forced into thefitting. If desired, an opening 31 may be formed in the cap 6 to avoidany reduction of pressure in the outer end of the barrel 5.

From the above description, it will be apparent that I have provided alubricant compressor which is simple of construction, economical tomanufacture and easy to operate.

While I have described the details of construction of the preferredembodiment of my invention, it is to be clearly understood thatmyinvention is not limited to the details but is capable of otheradaptations and modifications within the scope of the appended claims.

Having thus described my invention, what I claim is: y

1. A compressor comprising a barrel, one end of which terminates in aninteriorly threaded nipple, a pair of cup-shaped bushings having theiropen ends threaded into said nipple in opposed relation, there beingaligned apertures in the bottom of said bushings, a plunger supported insaid barrel and extendin through the opening in the inner'one of saidbushings, a piston slidable on said plunger, a cylinder for receivingthe outer end of said plunger, said cylinder being in communication withsaid barrel and extending through the opening in the outer bushing, theopening in the bottom of the outer bushing and the exterior of saidplunger being olygonal, means carried by the outer end of said cylinderfor making sealed connection with a fitting, a gasket carried by theinner end of said cylinder, and a spring confined between said gasketand one of said bushings for urging said cylinder outwardly.

2. A compressor comprising a barrel terminating at one end in a nipple,a pair of cup-shaped bushings supported by said nipple in opposedrelation, a plunger carried by said barrel and extending through thebottom of the inner one of said bushings, a cylinder in communicationwith said barrel and comprising means for slidably receiving the freeend of said plunger, said cylinder being slidable in the outer one ofsaid bushings, means within the outer end of said cylinder for makingsealed connection with a fitting, and means carried by said cylinder forpreventing escape of lubricant bet-ween said cylinder and said bushing.

3. A compressor comprising a barrel and a plunger sup orted in saidbarrel, a pair of tubular bus ings carried by one end of said barrel,one end of said plunger projecting into one of said bushings, a cylinderextending through the outer bushing for receiving the free end of saidplunger and means for preventing escape of lubricant between saidcylinder and said outer bush- 111".

Z. A lubricant compressor comprising a plunger and a cylinder forreceiving one end of said plunger, said cylinder and plunger beingreeiproeable relatively to each other, a barrel for supplying lubricantto said cylinder and means for effecting a sealed relation between saidcylinder and said barrel comprising a tubular member, a

gasket in said tubular member, and a spring for urging said cylinder toits charging position and for exerting pressure against one side of saidgasket.

5. A lubricant compressor comprising a barrel and cylinder for receivinglubricant from said barrel, said barrel and cylinder being re'ciprocablerelatively to each other. a coupling member carried by the outer end ofsaid cylinder, said coupling member being provided with means for makinga mechanical connection with a fitting upon the rotation of said barrel,and means for causing said coupling member to rotate with said barrelwhen said barrel is rotated.

In witness whereof, I hereunto subscribe my name this 15th day ofFebruary, 192- DOUGLAS F. FESLER.

